초록 ▼

A vented hatch cover assembly for a railroad hopper car including top and bottom members having substantially rigid and somewhat dome-shaped bodies which are divided into four quadrants wherein each quadrant includes coacting baffle members extending from the bodies of the top and bottom members whi

A vented hatch cover assembly for a railroad hopper car including top and bottom members having substantially rigid and somewhat dome-shaped bodies which are divided into four quadrants wherein each quadrant includes coacting baffle members extending from the bodies of the top and bottom members which define a plurality of circuitous air passageways to allow air flow into and out of the hopper car while restricting moisture and other contaminants from entering the car. An improved hatch cover lock mechanism for securing a vented or non-vented cover to the hatch is easily adjustable to provide a tight seal between the cover and hatch, and provides a safe controlled opening of a non-vented cover. An improved seal or gasket is arranged between the cover and hatch.

대표청구항 ▼

[ The invention is hereby claimed as follows:] [1.] A vented hatch cover for covering a hatch opening of a compartment defined by a coaming, said vented hatch cover comprising:a first member having means for forming a seal with said coaming,a second member spanning said first member and being in sup

[ The invention is hereby claimed as follows:] [1.] A vented hatch cover for covering a hatch opening of a compartment defined by a coaming, said vented hatch cover comprising:a first member having means for forming a seal with said coaming,a second member spanning said first member and being in supported spaced apart relation to said first member, said second member being peripherally larger than said first member to define a downwardly facing peripheral opening with said first member, andat least one of said first and second members having means for defining a plurality of circuitous air passageways between said first and second members which allow air to be drawn into the compartment while preventing moisture and other contaminants from entering the compartment.